TWI796223B - Bicycle rear cassette and sprocket thereof - Google Patents
Bicycle rear cassette and sprocket thereof Download PDFInfo
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- TWI796223B TWI796223B TW111117965A TW111117965A TWI796223B TW I796223 B TWI796223 B TW I796223B TW 111117965 A TW111117965 A TW 111117965A TW 111117965 A TW111117965 A TW 111117965A TW I796223 B TWI796223 B TW I796223B
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- sprocket
- sprockets
- fastener
- sprocket set
- outer diameter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
- B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
- B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
- B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
- B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K25/00—Axle suspensions
- B62K25/02—Axle suspensions for mounting axles rigidly on cycle frame or fork, e.g. adjustably
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
- B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
- B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
- B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
- B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
- B62M9/121—Rear derailleurs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Gears, Cams (AREA)
- Steering Devices For Bicycles And Motorcycles (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
- Automatic Cycles, And Cycles In General (AREA)
Abstract
Description
本發明係關於一種後飛輪及其鏈輪,特別是一種自行車後飛輪及其鏈輪。 The invention relates to a rear flywheel and its sprocket, in particular to a bicycle rear flywheel and its sprocket.
在目前自行車的後飛輪中的多個鏈輪中,這些鏈輪之外徑由小至大依序地排列,部分的鏈輪是經由螺柱與鉚釘的搭配而相固定。舉例來說,螺柱穿過大部分的鏈輪而鎖附於外徑最大的鏈輪。為了讓外徑相對大的某幾片鏈輪能承受偏斜角度更大的鏈條所施加的作用力,外徑相對大的這幾片鏈輪還額外透過鉚釘相固定,而使其具有更佳的結構強度。 Among the multiple sprockets in the rear flywheel of the current bicycle, the outer diameters of these sprockets are arranged in order from small to large, and some sprockets are fixed by the collocation of studs and rivets. For example, the stud goes through most of the sprockets and locks to the sprocket with the largest outer diameter. In order to allow some sprockets with relatively large outer diameters to withstand the force exerted by the chain with a larger deflection angle, these sprockets with relatively large outer diameters are additionally fixed by rivets, so that they have better performance. structural strength.
然,這些鏈輪在製造上勢必有公差的存在,造成在螺絲將這些鏈輪固定之後,外徑相對大的這幾片鏈輪供鉚釘穿過的孔位無法準確對齊。為了避免這樣的情況發生,自行車廠商在製造外徑相對大的這幾片鏈輪時,會稍微加大供鉚釘穿過的孔位,來讓鉚釘可以進行組裝,但此舉卻也犧牲了外徑相對大的這幾片鏈輪的整體結構強度。因此,目前自行車廠商正致力於解決前述的問題。 However, there must be tolerances in the manufacture of these sprockets, so that after these sprockets are fixed by screws, the holes through which the rivets pass through these sprockets with relatively large outer diameters cannot be accurately aligned. In order to avoid such a situation, bicycle manufacturers will slightly increase the holes for the rivets to pass through when manufacturing these sprockets with relatively large outer diameters, so that the rivets can be assembled, but this also sacrifices the outer diameter. The overall structural strength of these sprockets with relatively large diameters. Therefore, bicycle manufacturers are working on solving the aforementioned problems at present.
本發明在於提供一種自行車後飛輪及其鏈輪,能避免為了讓鏈輪妥善固定而犧牲了結構強度的問題。 The present invention provides a bicycle rear flywheel and its sprocket, which can avoid the problem of sacrificing structural strength in order to properly fix the sprocket.
本發明之一實施例所揭露之一種自行車後飛輪,用以安裝於一自行車輪轂上。自行車後飛輪包含一第一鏈輪組、至少一第一緊固件、一第二鏈輪組及至少一第二緊固件。第一鏈輪組包含多個鏈輪,第一鏈輪組的這些鏈輪由外徑大至小依序地排列。第一緊固件固定第一鏈輪組的這些鏈輪。第二鏈輪組包含多個鏈輪,第二鏈輪組的這些鏈輪由外徑大至小依序地排列。第二鏈輪組的這些鏈輪中外徑最大的一者鄰接於第一鏈輪組的這些鏈輪中外徑最小的一者。第二緊固件穿過第二鏈輪組的這些鏈輪並固定於第一鏈輪組的這些鏈輪中外徑最小的一者,而未穿過第一鏈輪組的這些鏈輪中的其他者。 An embodiment of the present invention discloses a bicycle rear flywheel, which is used to be installed on a bicycle hub. The bicycle rear freewheel includes a first sprocket set, at least one first fastener, a second sprocket set and at least one second fastener. The first sprocket set includes a plurality of sprockets, and the sprockets of the first sprocket set are arranged sequentially from large outer diameters to small ones. A first fastener secures the sprockets of the first sprocket set. The second sprocket set includes a plurality of sprockets, and the sprockets of the second sprocket set are arranged sequentially from large outer diameters to small ones. The largest outer diameter of the sprockets of the second sprocket set is adjacent to the smallest outer diameter of the first sprocket set. The second fastener passes through the sprockets of the second sprocket set and is fixed to the smallest outer diameter of the sprockets of the first sprocket set without passing through the other of the sprockets of the first sprocket set By.
本發明之另一實施例所揭露之一種自行車後飛輪,用以安裝於一自行車輪轂上。自行車後飛輪包含多個鏈輪、至少一第一緊固件及至少一第二緊固件。這些鏈輪由外徑大至小依序地排列,這些鏈輪被第一緊固件及第二緊固件所固定,且這些鏈輪中僅一者同時連接第一緊固件及第二緊固件。 Another embodiment of the present invention discloses a bicycle rear flywheel, which is used for mounting on a bicycle hub. The bicycle rear freewheel includes a plurality of sprockets, at least one first fastener and at least one second fastener. These sprockets are arranged sequentially from large to small outer diameters, these sprockets are fixed by the first fastener and the second fastener, and only one of the sprockets is connected to the first fastener and the second fastener at the same time.
本發明之又另一實施例所揭露之一種自行車後飛輪的鏈輪,用以安裝於一自行車輪轂上,自行車後飛輪的鏈輪包含一內環、至少一連接臂及一齒環。內環具有至少一組裝孔。連接臂的一端連接於內環,連接臂具有一組裝孔。齒環連接於連接臂的另一端。其中,內環的組裝孔及連接臂的組裝孔至少一者具有 一內螺紋結構。 Yet another embodiment of the present invention discloses a sprocket of a bicycle rear sprocket, which is used to be installed on a bicycle hub. The sprocket of the bicycle rear sprocket includes an inner ring, at least one connecting arm and a gear ring. The inner ring has at least one assembly hole. One end of the connecting arm is connected to the inner ring, and the connecting arm has an assembly hole. The gear ring is connected to the other end of the connecting arm. Wherein, at least one of the assembly hole of the inner ring and the assembly hole of the connecting arm has An internal thread structure.
根據上述實施例所揭露的自行車後飛輪及其鏈輪,藉由第二緊固件穿過第二鏈輪組的這些鏈輪並固定於第一鏈輪組的這些鏈輪中外徑最小的一者,而未穿過第一鏈輪組的這些鏈輪中的其他者,或所有的鏈輪中僅一者同時連接第一緊固件及第二緊固件,可使外徑相對大的幾片鏈輪供第一緊固件穿過的孔位彼此之間的對位不會受到第二緊固件的影響,而可設計為盡量匹配於第一緊固件的尺寸,故可確保外徑相對大的這幾片鏈輪整體具有期望的結構強度。 According to the bicycle rear flywheel and its sprockets disclosed in the above embodiments, the sprockets of the second sprocket set pass through the sprockets of the second sprocket set and are fixed to the one with the smallest outer diameter among the sprockets of the first sprocket set. , without passing through the other of these sprockets of the first sprocket set, or only one of all the sprockets is connected to the first fastener and the second fastener at the same time, which can make several pieces of chain with relatively large outer diameter The alignment of the holes for the first fastener to pass through will not be affected by the second fastener, but can be designed to match the size of the first fastener as much as possible, so it can ensure that the outer diameter is relatively large. The sprockets as a whole have the desired structural strength.
以上關於本發明內容的說明及以下實施方式的說明係用以示範與解釋本發明的原理,並且提供本發明的專利申請範圍更進一步的解釋。 The above description of the content of the present invention and the following description of the implementation are used to demonstrate and explain the principle of the present invention, and provide further explanation of the patent application scope of the present invention.
1,1a:自行車後飛輪 1,1a: Bicycle rear flywheel
2:鎖定元件 2: Locking element
3:凸緣部 3: Flange
10,10a:第一鏈輪組 10,10a: The first sprocket set
11,11a:第一鏈輪 11,11a: 1st sprocket
111:內環 111: inner ring
1111:輪轂組裝部 1111:Wheel assembly department
1112:卡合凸塊 1112: engaging bump
112:連接臂 112: connecting arm
1121,1121a:組裝孔 1121, 1121a: assembly holes
1122a:內螺紋結構 1122a: Internal thread structure
113:齒環 113: gear ring
1131:齒部 1131: teeth
12,12a:第二鏈輪 12,12a: Second sprocket
121:內環 121: inner ring
1211:輪轂組裝部 1211:Wheel assembly department
1212:卡合凸塊 1212: engaging bump
122:連接臂 122: connecting arm
1221,1221a:組裝孔 1221, 1221a: assembly holes
123:齒環 123: gear ring
13,13a:第三鏈輪 13,13a: Third sprocket
131:內環 131: inner ring
1311:輪轂組裝部 1311:Wheel assembly department
1312:卡合凸塊 1312: Snap bump
1313:第二組裝孔 1313: The second assembly hole
1314:內螺紋結構 1314: internal thread structure
132:連接臂 132: connecting arm
1321,1321a:第一組裝孔 1321, 1321a: first assembly hole
133:齒環 133: gear ring
14,14a:墊片 14,14a: Gasket
142,142a:穿孔 142, 142a: perforation
20,20a:第一緊固件 20,20a: first fastener
21a:外螺紋結構 21a: External thread structure
30,30a:第二鏈輪組 30,30a: Second sprocket set
31,31a:第四鏈輪 31,31a: Fourth sprocket
311:內環 311: inner ring
3111:輪轂組裝部 3111: Wheel assembly department
3112:組裝孔 3112: assembly hole
3113:卡合凸塊 3113: Snap bump
312:連接臂 312: connecting arm
313:齒環 313: gear ring
32,32a:第五鏈輪 32,32a: fifth sprocket
321:內環 321: inner ring
3211:輪轂組裝部 3211: Wheel assembly department
3212:組裝孔 3212: assembly hole
3213:卡合凸塊 3213: Snap bump
322:連接臂 322: connecting arm
323:齒環 323: gear ring
33,33a:第六鏈輪 33,33a: Sixth sprocket
331:內環 331: inner ring
3311:輪轂組裝部 3311: Wheel assembly department
3312:組裝孔 3312: assembly hole
3313:卡合凸塊 3313: Snap bump
332:連接臂 332: connecting arm
333:齒環 333: gear ring
34,34a:墊片 34,34a: Gasket
341:輪轂組裝部 341:Wheel assembly department
3411:卡合凸塊 3411: snap bump
342:穿孔 342: perforation
40,40a:第二緊固件 40,40a: Second fastener
41:外螺紋結構 41: External thread structure
50,50a:第三鏈輪組 50,50a: The third sprocket set
51,51a:第七鏈輪 51,51a: seventh sprocket
511:輪轂組裝部 511:Wheel hub assembly department
5111:卡合凸塊 5111: Snap bump
52,52a:第八鏈輪 52,52a: eighth sprocket
521:鏈輪部 521: sprocket part
522:抵靠部 522: abutting part
5221:輪轂組裝部 5221: Wheel hub assembly department
5222:卡合凸塊 5222: Snap bump
53,53a:第九鏈輪 53,53a: ninth sprocket
531:鏈輪部 531: sprocket part
5311:抵靠面 5311: abutment surface
5312:阻力施加結構 5312: resistance application structure
532:抵靠部 532: abutting part
5321:輪轂組裝部 5321: Wheel assembly department
5322:卡合凸塊 5322: Snap bump
54,54a:墊片 54,54a: Gasket
541:輪轂組裝部 541:Wheel assembly department
5411:卡合凸塊 5411: Snap bump
圖1為根據本發明之第一實施例所揭露之自行車後飛輪的立體示意圖。 FIG. 1 is a three-dimensional schematic diagram of a bicycle rear flywheel disclosed according to a first embodiment of the present invention.
圖2為圖1的分解示意圖。 FIG. 2 is an exploded schematic diagram of FIG. 1 .
圖3為圖2之第一鏈輪組的分解示意圖。 FIG. 3 is an exploded schematic view of the first sprocket set in FIG. 2 .
圖4為圖2之第二鏈輪組及第一鏈輪組外徑最小之鏈輪的分解示意圖。 FIG. 4 is an exploded schematic diagram of the second sprocket set and the sprocket with the smallest outer diameter of the first sprocket set in FIG. 2 .
圖5為圖2之第三鏈輪組及鎖定元件的分解示意圖。 FIG. 5 is an exploded schematic view of the third sprocket set and the locking element in FIG. 2 .
圖6為圖1的剖視示意圖。 FIG. 6 is a schematic cross-sectional view of FIG. 1 .
圖7為根據本發明之第二實施例所揭露之自行車後飛輪的立 體示意圖。 Figure 7 is a vertical view of the bicycle rear flywheel disclosed according to the second embodiment of the present invention. body diagram.
圖8為圖7的分解示意圖。 FIG. 8 is an exploded schematic view of FIG. 7 .
圖9為圖8之第一鏈輪組的分解示意圖。 FIG. 9 is an exploded schematic diagram of the first sprocket set in FIG. 8 .
圖10為圖8之第二鏈輪組及第一鏈輪組外徑最小之鏈輪的分解示意圖。 FIG. 10 is an exploded schematic view of the second sprocket set and the sprocket with the smallest outer diameter of the first sprocket set in FIG. 8 .
圖11為圖8之第三鏈輪組的分解示意圖。 FIG. 11 is an exploded schematic diagram of the third sprocket set in FIG. 8 .
圖12為圖7的剖視示意圖。 FIG. 12 is a schematic cross-sectional view of FIG. 7 .
請參閱圖1及圖2。圖1為根據本發明之第一實施例所揭露之自行車後飛輪的立體示意圖。圖2為圖1的分解示意圖。 Please refer to Figure 1 and Figure 2. FIG. 1 is a three-dimensional schematic diagram of a bicycle rear flywheel disclosed according to a first embodiment of the present invention. FIG. 2 is an exploded schematic diagram of FIG. 1 .
在本實施例中,自行車後飛輪1用以裝設於一自行車輪轂(未繪示)。自行車後飛輪1包含一第一鏈輪組10、多個第一緊固件20、一第二鏈輪組30及多個第二緊固件40。此外,自行車後飛輪1還可包含一第三鏈輪組50。
In this embodiment, the bicycle rear flywheel 1 is used to be installed on a bicycle hub (not shown). The bicycle rear freewheel 1 includes a first sprocket set 10 , a plurality of
接著,請參閱圖2、圖3及圖6,圖3為圖2之第一鏈輪組的分解示意圖。圖6為圖1的剖視示意圖。 Next, please refer to FIG. 2 , FIG. 3 and FIG. 6 . FIG. 3 is an exploded schematic view of the first sprocket set in FIG. 2 . FIG. 6 is a schematic cross-sectional view of FIG. 1 .
第一鏈輪組10包含一第一鏈輪11、一第二鏈輪12及一第三鏈輪13。此外,第一鏈輪組10還可包含多個墊片14。在第一鏈輪組10中,第一鏈輪11的外徑最大、第二鏈輪12的外徑次之,而第三鏈輪13的外徑最小,其中第一鏈輪11的外徑又是第一鏈輪組10、第二鏈輪組30及第三鏈輪組50的所有鏈輪中
最大的。第一鏈輪11、第二鏈輪12及第三鏈輪13由外徑大至小依序地排列,其中一墊片14位於第一鏈輪11及第二鏈輪12之間,而另一墊片14位於第二鏈輪12及第三鏈輪13之間。
The first sprocket set 10 includes a
接著,將進一步介紹第一鏈輪11、第二鏈輪12、第三鏈輪13及墊片14的結構。
Next, the structures of the
第一鏈輪11包含一內環111、多個連接臂112及一齒環113。內環111透過這些連接臂112連接於齒環113。內環111具有一輪轂組裝部1111,而輪轂組裝部1111具有多個卡合凸塊1112,這些卡合凸塊1112用以卡合於自行車輪轂的卡合凹槽(未繪示),而使得第一鏈輪11無法相對自行車輪轂轉動。這些連接臂112各具有一組裝孔1121,這些組裝孔1121分別供第一緊固件20穿設。齒環113具有多個齒部1131,齒部1131的數量大於或等於40個。在本實施例中,齒部1131的數量為46個,但並不以此為限。在其他實施例中,第一鏈輪之齒環的齒部數量可以為其他的數量。
The
第二鏈輪12亦包含一內環121、多個連接臂122及一齒環123。內環121透過這些連接臂122連接於齒環123。內環121具有一輪轂組裝部1211,而輪轂組裝部1211具有多個卡合凸塊1212,這些卡合凸塊1212用以卡合於自行車輪轂的卡合凹槽(未繪示),而使得第二鏈輪12無法相對自行車輪轂轉動。這些連接臂122各具有一組裝孔1221,這些組裝孔1221分別供第一緊固件20穿設。
The
第三鏈輪13亦包含一內環131、多個連接臂132及一齒環133。內環131透過這些連接臂132連接於齒環133。內環131具有一輪轂組裝部1311,而輪轂組裝部1311具有多個卡合凸塊1312,這些卡合凸塊1312用以卡合於自行車輪轂的卡合凹槽(未繪示),而使得第三鏈輪13無法相對自行車輪轂轉動。這些連接臂132各具有一第一組裝孔1321,這些第一組裝孔1321無內螺紋結構,這些第一組裝孔1321分別供第一緊固件20穿設。
The
這些墊片14各具有多個穿孔142,這些穿孔142分別供第一緊固件20穿設。
Each of the
這些第一緊固件20例如為鉚釘且無與內螺紋結構相搭配的外螺紋結構。這些第一緊固件20分別穿設於第三鏈輪13的這些第一組裝孔1321、第二鏈輪12的這些組裝孔1221、第一鏈輪11的這些組裝孔1121及各墊片14的這些穿孔142,而將第一鏈輪11、第二鏈輪12、第三鏈輪13及這些墊片14固定在一起。
These
應注意的是,第一鏈輪11、第二鏈輪12及第三鏈輪13的連接臂的數量並不限為多個。在其他實施例中,第一鏈輪、第二鏈輪及第三鏈輪的連接臂的數量可僅為一個,而第一緊固件的數量亦僅可為一個。
It should be noted that the number of connecting arms of the
接著,請參閱圖2、4及6。圖4為圖2之第二鏈輪組及第一鏈輪組外徑最小之鏈輪的分解示意圖。 Next, please refer to Figures 2, 4 and 6. FIG. 4 is an exploded schematic diagram of the second sprocket set and the sprocket with the smallest outer diameter of the first sprocket set in FIG. 2 .
第二鏈輪組30包含一第四鏈輪31、一第五鏈輪32
及一第六鏈輪33。此外,第二鏈輪組30還可包含多個墊片34。在第二鏈輪組30中,第四鏈輪31的外徑最大、第五鏈輪32的外徑次之,而第六鏈輪33的外徑最小,其中第四鏈輪31的外徑小於第一鏈輪組10之第三鏈輪13的外徑,而第六鏈輪33大於第三鏈輪組50的所有鏈輪的外徑。第四鏈輪31、第五鏈輪32及第六鏈輪33由外徑大至小依序地排列,第四鏈輪31透過其中一墊片34鄰接於第一鏈輪組10的第三鏈輪13,另一墊片34位於第四鏈輪31及第五鏈輪32之間,而又另一墊片34位於第五鏈輪32及第六鏈輪33之間。
The second sprocket set 30 includes a
接著,將進一步介紹第四鏈輪31、第五鏈輪32、第六鏈輪33及這些墊片34的結構。
Next, the structures of the
第四鏈輪31包含一內環311、多個連接臂312及一齒環313。內環311透過這些連接臂312連接於齒環313。內環311具有一輪轂組裝部3111及多個組裝孔3112,而輪轂組裝部3111具有多個卡合凸塊3113。這些卡合凸塊3113用以卡合於自行車輪轂的卡合凹槽(未繪示),而使得第四鏈輪31無法相對自行車輪轂轉動。這些組裝孔3112分別供第二緊固件40穿設。
The
第五鏈輪32亦包含一內環321、多個連接臂322及一齒環323。內環321透過這些連接臂322連接於齒環323。內環321具有一輪轂組裝部3211及多個組裝孔3212,而輪轂組裝部3211具有多個卡合凸塊3213。這些卡合凸塊3213用以卡合於自行車輪轂的卡合凹槽(未繪示),而使得第五鏈輪32無法相對自行
車輪轂轉動。這些組裝孔3212分別供第二緊固件40穿設。
The
第六鏈輪33亦包含一內環331、多個連接臂332及一齒環333。內環331透過這些連接臂332連接於齒環333。內環331具有一輪轂組裝部3311及多個組裝孔3312,而輪轂組裝部3311具有多個卡合凸塊3313,這些卡合凸塊3313用以卡合於自行車輪轂的卡合凹槽(未繪示),而使得第六鏈輪33無法相對自行車輪轂轉動。這些組裝孔3312分別供第二緊固件40穿設。
The
這些墊片34各具有一輪轂組裝部341及多個穿孔342。輪轂組裝部341具有多個卡合凸塊3411,這些卡合凸塊3411用以卡合於自行車輪轂的卡合凹槽(未繪示),而使得墊片34無法相對自行車輪轂轉動。這些穿孔342分別供第二緊固件40穿設。
Each of the
在本實施例中,第一鏈輪組10的第三鏈輪13的內環131還具有多個第二組裝孔1313。第二組裝孔1313於第三鏈輪13的徑向上較第一組裝孔1321靠近第三鏈輪13之內環131的輪轂組裝部1311。這些第二組裝孔1313各具有一內螺紋結構1314。這些第二緊固件40例如為螺柱且各具有一外螺紋結構41。這些第二緊固件40分別穿設於第六鏈輪33的這些組裝孔3312、第五鏈輪32的這些組裝孔3212、第四鏈輪31的這些組裝孔3112及各墊片34的多個穿孔342,並鎖附於第一鏈輪組10的第三鏈輪13的這些第二組裝孔1313,而將第三鏈輪13、第四鏈輪31、第五鏈輪32、第六鏈輪33及這些墊片34固定在一起。
In this embodiment, the
應注意的是,第四鏈輪31、第五鏈輪32及第六鏈輪
33的連接臂的數量並不限為多個。在其他實施例中,第四鏈輪、第五鏈輪及第六鏈輪的連接臂的數量可僅為一個。
It should be noted that the
此外,第六鏈輪33的組裝孔3312、第五鏈輪32的組裝孔3212、第四鏈輪31的組裝孔3112、各墊片34的穿孔342及第一鏈輪組10的第三鏈輪13的第二組裝孔1313的數量並不限為多個。在其他實施例中,第六鏈輪的組裝孔、第五鏈輪的組裝孔、第四鏈輪的組裝孔、各墊片的穿孔及第一鏈輪組的第三鏈輪的第二組裝孔的數量可僅為一個,而第二緊固件的數量可僅為一個。
In addition, the
接著,請參閱圖2、5及6。圖5為圖2之第三鏈輪組及鎖定元件的分解示意圖。第三鏈輪組50包含一第七鏈輪51、一第八鏈輪52、一第九鏈輪53及一墊片54。
Next, please refer to Figures 2, 5 and 6. FIG. 5 is an exploded schematic view of the third sprocket set and the locking element in FIG. 2 . The third sprocket set 50 includes a
在第三鏈輪組50中,第七鏈輪51的外徑最大、第八鏈輪52的外徑次之,而第九鏈輪53的外徑最小,其中第七鏈輪51的外徑小於第二鏈輪組30之第六鏈輪33的外徑,而第九鏈輪53的外徑為第一鏈輪組10、第二鏈輪組30及第三鏈輪組50之所有鏈輪中最小的。第七鏈輪51、第八鏈輪52及第九鏈輪53由外徑大至小依序地排列,第七鏈輪51透過墊片54鄰接於第二鏈輪組30的第六鏈輪33。
In the third sprocket set 50, the outer diameter of the
接著,將進一步介紹第七鏈輪51、第八鏈輪52、第九鏈輪53及墊片54的結構。
Next, the structures of the
第七鏈輪51具有一輪轂組裝部511,而輪轂組裝部
511具有多個卡合凸塊5111,這些卡合凸塊5111用以卡合於自行車輪轂的卡合凹槽(未繪示),而使得第七鏈輪51無法相對自行車輪轂轉動。
The
第八鏈輪52包含一鏈輪部521及一抵靠部522。抵靠部522沿鏈輪部521的軸向凸出於鏈輪部521。第八鏈輪52的抵靠部522抵靠於第七鏈輪51,且第八鏈輪52的鏈輪部521與第七鏈輪51保持距離。第八鏈輪52的抵靠部522具有一輪轂組裝部5221,而輪轂組裝部5221具有多個卡合凸塊5222,這些卡合凸塊5222用以卡合於自行車輪轂的卡合凹槽(未繪示),而使得第八鏈輪52無法相對自行車輪轂轉動。
The
第九鏈輪53包含一鏈輪部531及一抵靠部532。抵靠部532沿鏈輪部531的軸向凸出於鏈輪部531。第九鏈輪53的抵靠部532抵靠於第八鏈輪52的鏈輪部521,且第九鏈輪53的鏈輪部531與第八鏈輪52的鏈輪部521保持距離。第九鏈輪53的抵靠部532具有一輪轂組裝部5321,而輪轂組裝部5321具有多個卡合凸塊5322,這些卡合凸塊5322用以卡合於自行車輪轂的卡合凹槽(未繪示),而使得第九鏈輪53無法相對自行車輪轂轉動。
The
墊片54具有一輪轂組裝部541。輪轂組裝部541具有多個卡合凸塊5411,這些卡合凸塊5411用以卡合於自行車輪轂的卡合凹槽(未繪示),而使得墊片54無法相對自行車輪轂轉動。
The
在本實施例中,整體自行車後飛輪1用以透過與自
行車輪轂結合的一鎖定元件2定位於自行車輪轂上。其中鎖定元件2具有一凸緣部3,而第九鏈輪53之鏈輪部531具有一抵靠面5311及一阻力施加結構5312。第九鏈輪53之鏈輪部531的抵靠面5311背對於第八鏈輪52。阻力施加結構5312例如為凹凸結構,其位於第九鏈輪53之鏈輪部531的抵靠面5311上。鎖定元件2的凸緣部3抵靠於第九鏈輪53之鏈輪部531的阻力施加結構5312,以避免鎖定元件2相對於自行車輪轂轉動而產生鬆脫的情況。
In this embodiment, the integral bicycle rear flywheel 1 is used to transmit and
A locking
在本實施例中,第一鏈輪11、第二鏈輪12、第三鏈輪13、第四鏈輪31、第五鏈輪32、第六鏈輪33、第七鏈輪51、第八鏈輪52的鏈輪部521及第九鏈輪53的鏈輪部531的厚度至少為1.8mm,但並不以此為限,前述之鏈輪的厚度可依據需求進行調整。
In this embodiment, the
在本實施例中,第二緊固件40穿過第二鏈輪組30的所有鏈輪(第四鏈輪31、第五鏈輪32及第六鏈輪33)並固定於第一鏈輪組10的這些鏈輪中外徑最小的第三鏈輪13,而未穿過第一鏈輪組10的這些鏈輪中的其他者;也就是說,所有的鏈輪中僅第三鏈輪13同時連接第一緊固件20及第二緊固件40,可使外徑相對大的第一鏈輪11、第二鏈輪12及第三鏈輪13供第一緊固件20穿過的組裝孔彼此之間的對位不會受到第二緊固件40的影響,而可設計為匹配於第一緊固件20的尺寸,故可確保外徑相對大的第一鏈輪11、第二鏈輪12及第三鏈輪13整體具有期望的結
構強度。
In this embodiment, the
此外,在第三鏈輪13的第一組裝孔1321及第二組裝孔1313中,僅第二組裝孔1313具有內螺紋結構1314,而第一組裝孔1321無內螺紋結構的配置,可使第三鏈輪13之第一組裝孔1321的尺寸及位置不需要高的精度要求,只要能讓第一緊固件20裝設即可,故可降低第三鏈輪13的製造困難度。
In addition, among the
應注意的是,第三鏈輪13的第一組裝孔1321並不限於無內螺紋結構,而第二組裝孔1313並不限於具有內螺紋結構1314。在其他實施例中,第三鏈輪的第一組裝孔及第二組裝孔可皆有內螺紋結構,而第一緊固件及第二緊固件可為螺柱。在另一實施例中,第三鏈輪的第一組裝孔可有內螺紋結構,且第二組裝孔無內螺紋結構,而第一緊固件可為螺柱,第二緊固件可為鉚釘。
It should be noted that the
接著,請參閱圖7至圖12。圖7為根據本發明之第二實施例所揭露之自行車後飛輪的立體示意圖。圖8為圖7的分解示意圖。圖9為圖8之第一鏈輪組的分解示意圖。圖10為圖8之第二鏈輪組及第一鏈輪組外徑最小之鏈輪的分解示意圖。圖11為圖8之第三鏈輪組的分解示意圖。 Next, please refer to Figure 7 to Figure 12 . FIG. 7 is a three-dimensional schematic diagram of the bicycle rear flywheel disclosed according to the second embodiment of the present invention. FIG. 8 is an exploded schematic view of FIG. 7 . FIG. 9 is an exploded schematic diagram of the first sprocket set in FIG. 8 . FIG. 10 is an exploded schematic view of the second sprocket set and the sprocket with the smallest outer diameter of the first sprocket set in FIG. 8 . FIG. 11 is an exploded schematic diagram of the third sprocket set in FIG. 8 .
本實施例的自行車後飛輪1a亦包含一第一鏈輪組10a、多個第一緊固件20a、一第二鏈輪組30a、多個第二緊固件40a及第三鏈輪組50a,其中第一鏈輪組10a包含一第一鏈輪11a、一第二鏈輪12a、一第三鏈輪13a及多個墊片14a,第二鏈輪組
30a包含一第四鏈輪31a、一第五鏈輪32a、一第六鏈輪33a及多個墊片34a,而第三鏈輪組50a包含一第七鏈輪51a、一第八鏈輪52a、一第九鏈輪53a及一墊片54a。前述這些元件分別類似於上述參閱圖1至5所述之自行車後飛輪1中對應的元件,本實施例的自行車後飛輪1a與上述參閱圖1至5所述之自行車後飛輪1主要差異在於第一緊固件的類型不同及第一鏈輪供第一緊固件裝設的組裝孔的結構不同,故以下主要針對該差異進行說明,至於其他元件及結構則請參照上述參閱圖1至5之自行車後飛輪的說明內容,而不再贅述。
The bicycle rear flywheel 1a of the present embodiment also includes a first sprocket set 10a, a plurality of
詳細來說,第一鏈輪11a的這些組裝孔1121a各具有一內螺紋結構1122a。這些第一緊固件20a例如為螺柱,且各具有一外螺紋結構21a。這些第一緊固件20a分別穿設於第三鏈輪13a的這些第一組裝孔1321a、第二鏈輪12a的這些組裝孔1221a及墊片14a的這些穿孔142a,且這些第一緊固件20a的外螺紋結構21a分別與第一鏈輪11a的這些組裝孔1121a的內螺紋結構1122a結合,而使得第一鏈輪11a、第二鏈輪12a、第三鏈輪13a及墊片14a固定在一起。
In detail, each of the assembly holes 1121a of the
在本發明中,第一鏈輪組並不限為整體自行車後飛輪中外徑最大的鏈輪組。在其他實施例中,第一鏈輪組可非為整體自行車後飛輪中外徑最大的鏈輪組。舉例來說,第一鏈輪組可為整體自行車後飛輪中外徑次大的鏈輪組。 In the present invention, the first sprocket set is not limited to the sprocket set with the largest outer diameter in the overall bicycle rear flywheel. In other embodiments, the first sprocket set may not be the sprocket set with the largest outer diameter in the entire bicycle rear flywheel. For example, the first sprocket set may be the sprocket set with the second largest outer diameter in the overall bicycle rear cassette.
此外,各鏈輪組之鏈輪的數量,並非用以限制本發明, 而可依據實際需求進行調整。 In addition, the number of sprockets in each sprocket set is not intended to limit the present invention. It can be adjusted according to actual needs.
再者,各鏈輪組的墊片為選配的元件。在其他實施例中,鏈輪組可無墊片,而二個相鄰的鏈輪之中可藉由其中一個鏈輪的凸出結構作為墊片的功用。 Furthermore, the spacers of each sprocket set are optional components. In other embodiments, the sprocket set may not have a spacer, and the protruding structure of one of the two adjacent sprockets may serve as a spacer.
根據上述實施例所揭露的自行車後飛輪及其鏈輪,藉由第二緊固件穿過第二鏈輪組的這些鏈輪並固定於第一鏈輪組的這些鏈輪中外徑最小的一者,而未穿過第一鏈輪組的這些鏈輪中的其他者,或所有的鏈輪中僅一者同時連接第一緊固件及第二緊固件,可使外徑相對大的幾片鏈輪供第一緊固件穿過的孔位彼此之間的對位不會受到第二緊固件的影響,而可設計為準確匹配於第一緊固件的尺寸,故可確保外徑相對大的這幾片鏈輪整體具有期望的結構強度。 According to the bicycle rear flywheel and its sprockets disclosed in the above embodiments, the sprockets of the second sprocket set pass through the sprockets of the second sprocket set and are fixed to the one with the smallest outer diameter among the sprockets of the first sprocket set. , without passing through the other of these sprockets of the first sprocket set, or only one of all the sprockets is connected to the first fastener and the second fastener at the same time, which can make several pieces of chain with relatively large outer diameter The alignment of the holes through which the first fastener passes will not be affected by the second fastener, but can be designed to accurately match the size of the first fastener, so it can ensure that the outer diameter is relatively large. The sprockets as a whole have the desired structural strength.
雖然本發明以前述之較佳實施例揭露如上,然其並非用以限定本發明,任何熟習相像技藝者,在不脫離本發明之精神和範圍內,當可作些許之更動與潤飾,因此本發明之專利保護範圍須視本說明書所附之申請專利範圍所界定者為準。 Although the present invention is disclosed above with the aforementioned preferred embodiments, it is not intended to limit the present invention. Any person familiar with the similar art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, this The scope of patent protection for inventions shall be defined in the scope of patent application attached to this specification.
2:鎖定元件 2: Locking element
3:凸緣部 3: Flange
10:第一鏈輪組 10: The first sprocket set
11:第一鏈輪 11: First sprocket
12:第二鏈輪 12: Second sprocket
13:第三鏈輪 13: Third sprocket
20:第一緊固件 20: First Fastener
30:第二鏈輪組 30: Second sprocket set
31:第四鏈輪 31: Fourth sprocket
32:第五鏈輪 32: Fifth sprocket
33:第六鏈輪 33: Sixth sprocket
40:第二緊固件 40: Second Fastener
50:第三鏈輪組 50: The third sprocket set
51:第七鏈輪 51: seventh sprocket
52:第八鏈輪 52: Eighth sprocket
53:第九鏈輪 53: ninth sprocket
5311:抵靠面 5311: abutment surface
5312:阻力施加結構 5312: resistance application structure
Claims (11)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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TW111117965A TWI796223B (en) | 2022-05-13 | 2022-05-13 | Bicycle rear cassette and sprocket thereof |
DE202023102555.2U DE202023102555U1 (en) | 2022-05-13 | 2023-05-11 | Rear cassette of a bicycle and sprocket of the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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TW111117965A TWI796223B (en) | 2022-05-13 | 2022-05-13 | Bicycle rear cassette and sprocket thereof |
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TWI796223B true TWI796223B (en) | 2023-03-11 |
TW202344431A TW202344431A (en) | 2023-11-16 |
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TW111117965A TWI796223B (en) | 2022-05-13 | 2022-05-13 | Bicycle rear cassette and sprocket thereof |
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TW (1) | TWI796223B (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4102215A (en) * | 1976-05-19 | 1978-07-25 | Shimano Industrial Company Limited | Multi-speed freewheel for a bicycle |
CN101088851A (en) * | 2006-06-16 | 2007-12-19 | 株式会社岛野 | Bicycle sprocket assembly |
US20120196711A1 (en) * | 2011-01-28 | 2012-08-02 | Shimano (Singapore) Pte. Ltd. | Bicycle sprocket assembly |
WO2017040047A1 (en) * | 2015-09-01 | 2017-03-09 | The Hive Global, Inc. | Bicycle cassette with locking connection |
TWI758111B (en) * | 2021-02-26 | 2022-03-11 | 彥豪金屬工業股份有限公司 | Bicycle cassette and sprocket assembly thereof |
TWI759006B (en) * | 2020-12-11 | 2022-03-21 | 彥豪金屬工業股份有限公司 | Bicycle cassette |
-
2022
- 2022-05-13 TW TW111117965A patent/TWI796223B/en active
-
2023
- 2023-05-11 DE DE202023102555.2U patent/DE202023102555U1/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4102215A (en) * | 1976-05-19 | 1978-07-25 | Shimano Industrial Company Limited | Multi-speed freewheel for a bicycle |
CN101088851A (en) * | 2006-06-16 | 2007-12-19 | 株式会社岛野 | Bicycle sprocket assembly |
US20080004143A1 (en) * | 2006-06-16 | 2008-01-03 | Shimano Inc. | Bicycle sprocket assembly |
US20120196711A1 (en) * | 2011-01-28 | 2012-08-02 | Shimano (Singapore) Pte. Ltd. | Bicycle sprocket assembly |
WO2017040047A1 (en) * | 2015-09-01 | 2017-03-09 | The Hive Global, Inc. | Bicycle cassette with locking connection |
TWI759006B (en) * | 2020-12-11 | 2022-03-21 | 彥豪金屬工業股份有限公司 | Bicycle cassette |
TWI758111B (en) * | 2021-02-26 | 2022-03-11 | 彥豪金屬工業股份有限公司 | Bicycle cassette and sprocket assembly thereof |
Also Published As
Publication number | Publication date |
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TW202344431A (en) | 2023-11-16 |
DE202023102555U1 (en) | 2023-06-14 |
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